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-rw-r--r--src/mesa/drivers/dri/sis/sis_context.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/sis/sis_context.h b/src/mesa/drivers/dri/sis/sis_context.h
index c349bf96ed..6289fb4500 100644
--- a/src/mesa/drivers/dri/sis/sis_context.h
+++ b/src/mesa/drivers/dri/sis/sis_context.h
@@ -403,6 +403,8 @@ struct sis_context
#if defined(__i386__) || defined(__amd64__)
#define MMIO_WMB() __asm __volatile("" : : : "memory")
+#elif defined(__ia64__)
+#define MMIO_WMB() __asm __volatile("mf" : : : "memory")
#else
#error platform needs WMB
#endif